Gun is a Western-themed action-adventure video game released for the Microsoft Xbox in 2005. Developed by Neversoft and published by Activision, the game is set in the 19th century American frontier and follows the story of Colton White, a vengeful gunslinger on a quest for justice after a dramatic turn of events upends his life. Embodying the lawlessness of the Wild West, Gun merges third-person shooting with horseback riding and features an open-world environment. Players engage in gunfights, hunting, and various missions, defining the game's genre as an action-adventure with strong shooter elements.